Small popular science of skin care ingredients-nicotinamide and ceramide as magical ingredients

Finally, I want to talk to my sisters about skin care ingredients.

I believe my sisters have all heard the names of nicotinamide and ceramide. Today, Yiyi will tell you about these two ingredients. These two ingredients have always been very popular. I believe that many girls are buying with the wind in a daze.

Yiyi will tell you the function of these two ingredients in cosmetics today.

Nicotinamide and ceramide are both "amides" because they both contain a class of compounds with amide bond "-CONH-", but they are by no means the same substance.

Nicotinamide is a derivative of vitamin B3 and nicotinic acid.

Nicotinamide is mainly used as skin conditioner and smoothing agent in skin care products. Its molecular weight is very small, and it can enter the depths of the skin through the stratum corneum, inhibiting the formation of melanin (melanin is the chief culprit of our blackening), thus preventing the skin from blackening, so its greatest function is whitening.

In addition, nicotinamide can increase the levels of free fatty acids and ceramides in skin, maintain skin moisture content and promote dermal microcirculation. Yes, that's another ingredient we want to talk about-ceramide! Therefore, the effect that ceramide can achieve can actually be achieved by nicotinamide! Whitening, repairing barriers, moisturizing, anti-allergic, etc. It's all in the air! It can be said to be a panacea for skin care.

However, many people are red, and the ingredients are red. Many sisters will have doubts and questions about nicotinamide. Now, yi yi will answer:

Today, Yiyi will clear the name of nicotinamide here!

At present, there is no research showing that nicotinamide will grow hair! ! !

However, many sisters speculate that after people's skin turns white, there is nothing to hide on the surface of the hair, which makes people feel "hairy".

Yes, and it is suitable for daytime use!

Because nicotinamide is not sensitive to light, it does not need to be used in the dark.

Absolutely not! ! ! !

Low concentration has little effect, while high concentration of nicotinamide will irritate the face.

So the standard concentration is:

The effective concentration of nicotinamide is 2%

It takes more than 3% to achieve whitening effect.

Ceramide is a kind of phospholipid existing in the skin.

Ceramide is mostly found in moisturizing or products designed for sensitive skin. Why?

Because ceramide is one of the important components of stratum corneum, it can help repair the skin barrier and enhance the defense ability against external stimuli. In addition, it can also form a waterproof barrier on the skin surface, which has a powerful moisturizing function and can thicken the stratum corneum! Especially suitable for young ladies with thin cuticle like sensitive muscles.

Ceramide is also an important part of stratum corneum intercellular substance, which plays an important role in promoting the regeneration of keratin. If enough ceramide can be supplemented, the cuticle thickness of the skin will increase, the skin elasticity will be restored, and it has the effect of anti-wrinkle.

At the same time, scientific research experiments show that ceramide has a strong association ability with water molecules, which can hold the small hands of water molecules and form a network structure to lock water. The water-locking ability is much higher than other components in the skin barrier, such as cholesterol and fatty acids.

Fortunately, scientists have done experiments, and ceramides used in cosmetics can be directly applied! And it can be absorbed by the skin immediately! Because its structure is similar to the substance in the stratum corneum, it can quickly penetrate into the skin and combine with the moisture in the stratum corneum to form a network structure, which can lock your moisture!

Studies have shown that ceramide has no better effect than mineral oil if cholesterol and fatty acids, which are both skin barriers (lipids), do not match in ceramide products.

Therefore, combining with other lipids in a certain proportion can strengthen the barrier effect of ceramide. The optimum ratio is ceramide 50%, cholesterol 25% and free fatty acid 15%. This "transparent layered structure" mixture has a unique moisturizing function.

Having said that, everyone should have a clear understanding of these two ingredients!

There is no conflict between the two.

And they are all very skin-friendly

At the same time, it can achieve better skin care effect!

If you think it's useful, start pointing and share it with your sisters!

Thank you for reading my article.

Take care of yourself every day!

Look forward to your attention and compare your heart.